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PDF LM2931 Data sheet ( Hoja de datos )
| Número de pieza | LM2931 | |
| Descripción | LOW DROPOUT VOLTAGE REGULATORS | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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1. LM2931  Hay una vista previa y un enlace de descarga de LM2931 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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Order this document by LM2931/D
Low Dropout
Voltage Regulators
The LM2931 series consists of positive fixed and adjustable output
voltage regulators that are specifically designed to maintain proper
regulation with an extremely low input–to–output voltage differential. These
devices are capable of supplying output currents in excess of 100 mA and
feature a low bias current of 0.4 mA at 10 mA output.
Designed primarily to survive in the harsh automotive environment, these
devices will protect all external load circuitry from input fault conditions
caused by reverse battery connection, two battery jump starts, and
excessive line transients during load dump. This series also includes internal
current limiting, thermal shutdown, and additionally, is able to withstand
temporary power–up with mirror–image insertion.
Due to the low dropout voltage and bias current specifications, the
LM2931 series is ideally suited for battery powered industrial and consumer
equipment where an extension of useful battery life is desirable. The ‘C’
suffix adjustable output regulators feature an output inhibit pin which is
extremely useful in microprocessor–based systems.
• Input–to–Output Voltage Differential of < 0.6 V @ 100 mA
• Output Current in Excess of 100 mA
• Low Bias Current
• 60 V Load Dump Protection
• – 50 V Reverse Transient Protection
• Internal Current Limiting with Thermal Shutdown
• Temporary Mirror–Image Protection
• Ideally Suited for Battery Powered Equipment
• Economical 5–Lead TO–220 Package with Two Optional Leadforms
• Available in Surface Mount SOP–8, D2PAK and DPAK Packages
• High Accuracy (±2%) Reference (LM2931AC) Available
(See Following Page for Ordering Information.)
LM2931
Series
LOW DROPOUT
VOLTAGE REGULATORS
FIXED OUTPUT VOLTAGE
Z SUFFIX
PLASTIC PACKAGE
CASE 29
1
23
Pin 1. Output
2. Ground
3. Input
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
1
2
3
Pin 1. Input
2. Ground
3. Output
1
3
DT SUFFIX
PLASTIC PACKAGE
CASE 369A
(DPAK)
12 3
DT–1 SUFFIX
PLASTIC PACKAGE
CASE 369
(DPAK)
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D2PAK)
12
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
FIXED
N.C. 5 4
N.C.
Gnd Gnd
Input
Output
Inhibit
81
Output
8
(Top View)
1
D SUFFIX
PLASTIC PACKAGE
ADJUSTABLE
CASE 751
(SOP–8)
54
Adjust
Gnd Gnd
Input 8 1
Output
(Top View)
MOTOROLA ANALOG IC DEVICE DATA
ADJUSTABLE OUTPUT VOLTAGE
TH SUFFIX
PLASTIC PACKAGE
CASE 314A
Pin 1. Adjust
2. Output Inhibit
3. Ground
4. Input
5. Output
1
5
TV SUFFIX
PLASTIC PACKAGE
CASE 314B
1
T SUFFIX
PLASTC PACKAGE
CASE 314D
1
Heatsink surface connected to Pin 3. 5
5
1
5
D2T SUFFIX
PLASTIC PACKAGE
CASE 936A
(D2PAK)
Heatsink surface (shown as
terminal 6 in case outline
drawing) is connected to Pin 3.
© Motorola, Inc. 1997
Rev 4
1
1 page  
LM2931 Series
Figure 1. Dropout Voltage versus Output Current
200
160
Vin = 14 V
∆Vout = 100 mV
TJ = 25°C
120
Figure 2. Dropout Voltage versus
Junction Temperature
300
Vin = 14 V
∆Vout = 100 mV
200
IO = 100 mA
80
40
0
0 20 40 60 80 100
IO, OUTPUT CURRENT (mA)
100
IO = 50 mA
IO = 10 mA
0
0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Peak Output Current versus Input Voltage
350
TJ = –40°C
250
TJ = 25°C
TJ = 85°C
150
Dashed lines below Vin = 5.0 V
are for Adjustable output devices only.
50
0 5.0 10 15 20 25 30
Vin, INPUT VOLTAGE (V)
Figure 4. Output Voltage versus Input Voltage
6.0
5.0 Vout = 5.0 V
TA = 25°C
4.0
3.0
2.0
1.0 RL = 50 Ω
IO = 100 mA
0
0 1.0 2.0 3.0 4.0 5.0 6.0
Vin, INPUT VOLTAGE (V)
Figure 5. Output Voltage versus Input Voltage
6.0
5.0 VCC = 15 V
VFB1 = 5.05 V
4.0
3.0
2.0
1.0
0
–20 –10
Vout = 5.0 V
RL = 500 Ω
TA = 25°C
0 10 20 30 40
Vin, INPUT VOLTAGE (V)
50
60
Figure 6. Load Dump Characteristics
Vout = 5.0 V
RL = 50 Ω
CO = 100 µF
τ = 150 ms
TA = 25°C
0
0
t, TIME (50 ms/DIV)
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
R
SEATING
PLANE
AB
P
L
F
K
XX
G
H
V
1
N
N
C
LM2931 Series
OUTLINE DIMENSIONS
Z SUFFIX
PLASTIC PACKAGE
CASE 29–04
(TO–92 Type)
ISSUE AD
D
J
SECTION X–X
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. CONTOUR OF PACKAGE BEYOND DIMENSION R
IS UNCONTROLLED.
4. DIMENSION F APPLIES BETWEEN P AND L.
DIMENSION D AND J APPLY BETWEEN L AND K
MINIMUM. LEAD DIMENSION IS UNCONTROLLED
IN P AND BEYOND DIMENSION K MINIMUM.
INCHES
MILLIMETERS
DIM MIN MAX MIN MAX
A 0.175 0.205 4.45 5.20
B 0.170 0.210 4.32 5.33
C 0.125 0.165 3.18 4.19
D 0.016 0.022 0.41 0.55
F 0.016 0.019 0.41 0.48
G 0.045 0.055 1.15 1.39
H 0.095 0.105 2.42 2.66
J 0.015 0.020 0.39 0.50
K 0.500 – 12.70 –
L 0.250 – 6.35 –
N 0.080 0.105 2.04 2.66
P – 0.100 – 2.54
R 0.115 – 2.93 –
V 0.135 – 3.43 –
BF
T
Q
H
Z
4
1 23
A
K
U
L
V
G
N
D
T SUFFIX
PLASTIC PACKAGE
CASE 221A–06
(TO–220 Type)
ISSUE Y
–T–
SEATING
PLANE
C
S
R
J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIM Z DEFINES A ZONE WHERE ALL BODY AND
LEAD IRREGULARITIES ARE ALLOWED.
INCHES
MILLIMETERS
DIM MIN MAX MIN MAX
A 0.570 0.620 14.48 15.75
B 0.380 0.405 9.66 10.28
C 0.160 0.190 4.07 4.82
D 0.025 0.035 0.64 0.88
F 0.142 0.147 3.61 3.73
G 0.095 0.105 2.42 2.66
H 0.110 0.155 2.80 3.93
J 0.018 0.025 0.46 0.64
K 0.500 0.562 12.70 14.27
L 0.045 0.060 1.15 1.52
N 0.190 0.210 4.83 5.33
Q 0.100 0.120 2.54 3.04
R 0.080 0.110 2.04 2.79
S 0.045 0.055 1.15 1.39
T 0.235 0.255 5.97 6.47
U 0.000 0.050 0.00 1.27
V 0.045
– 1.15
–
Z – 0.080 – 2.04
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LM2931.PDF ] | |
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